Patents by Inventor Min Ji CHOI

Min Ji CHOI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190111416
    Abstract: The present invention relates to a catalyst composition for hydroformylation and a hydroformylation method using the same, and more particularly to a catalyst composition for hydroformylation including a phosphoramidite ligand and a transition metal catalyst, and a hydroformylation method using the catalyst composition. In accordance with the present invention, provided are a catalyst composition for hydroformylation which increases productivity and provides superior catalytic activity and stability while lowering an n/i ratio in generated aldehyde upon hydroformylation of an olefinic compound, and a method of hydroformylating an olefinic compound using the catalyst composition. [Representative Figure ] FIG.
    Type: Application
    Filed: August 26, 2016
    Publication date: April 18, 2019
    Inventors: Tae Yun KIM, Sung Shik EOM, Da Won JUNG, Dong Hyun KO, Mi Young KIM, Min Ji CHOI
  • Publication number: 20180290132
    Abstract: A hydroformylation catalyst having excellent catalytic activity and stability, a composition including the hydroformylation catalyst, and a method of preparing an aldehyde using the hydroformylation catalyst, wherein, when hydroformylation of an olefin compound is performed in the presence of the hydroformylation catalyst to prepare an aldehyde, the normal/iso (n/i) ratio of the prepared aldehyde is lowered, and synthesis gas yield is increased.
    Type: Application
    Filed: July 4, 2017
    Publication date: October 11, 2018
    Applicant: LG CHEM, LTD.
    Inventors: Mi Young KIM, Sung Shik EOM, Dong Hyun KO, Da Won JUNG, Tae Yun KIM, MIn Ji CHOI
  • Patent number: 10093603
    Abstract: The present disclosure relates to an apparatus for generating glycol and a method thereof. More particularly, the present disclosure relates to an apparatus for generating glycol including (a) an aldol reactor; (b) an extractor for extracting an aldol product, unsaturated aldehyde, using an organic solvent that is not mixed with water; (c) a distillation column for removing a raw material from a solution extract that is discharged from the extractor; (d) a hydrogenation reactor for hydrogenating a solution extract that is discharged from the distillation column; and (e) a divided-wall distillation column for isolating glycol from a hydrogenated solution product that is discharged from the hydrogenation reactor, wherein the hydrogenation reactor is a fixed-bed catalytic reactor that is filled with a copper-based catalyst, and a method of preparing the same.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: October 9, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Sung Shik Eom, Da Won Jung, Tae Yun Kim, Jung Uk Choi, Dong Hyun Ko, Mi Young Kim, Min Ji Choi
  • Publication number: 20180272326
    Abstract: The present invention relates to a catalyst composition including a phosphorous-based ligand, and a hydroformylation method using the catalyst composition. More particularly, the present invention relates to a catalyst composition, which includes two different kinds of monocoordinated phosphine ligands and a transition metal catalyst, and a hydroformylation method using the catalyst composition. In accordance with the present invention, a catalyst composition lowering a selection ratio of normal aldehyde to iso aldehyde (n/i ratio), which are generated during hydroformylation of an olefinic compound, and exhibiting superior catalytic activity and stability, and a method of hydroformylating an olefinic compound using the catalyst composition are provided.
    Type: Application
    Filed: October 4, 2016
    Publication date: September 27, 2018
    Inventors: Min Ji CHOI, Mi Young Kim, Sung Shik Eom, Dong Hyun Ko, Da Won Jung, Tae Yun Kim
  • Patent number: 9914682
    Abstract: Disclosed are a highly efficient neopentyl glycol preparation method and a device therefor. The method includes adding a hydroxypivaldehyde solution and hydrogen to a hydrogenation reactor that includes a hydrogenation catalyst. The hydroxypivaldehyde solution includes 6 to 30% by weight of hydroxypivaldehyde, 35 to 70% by weight of neopentyl glycol, 10 to 30% by weight of alcohol, and 10 to 30% by weight of water. The neopentyl glycol preparation method does not require separate heating in a section of a feed vessel to an inlet of a hydrogenation reactor unlike conventional technologies to save energy, and, at the same time, by-products with a high boiling point are not generated in the section to prevent poisoning of a hydrogenation catalyst in a reactor due to the by-products with a high boiling point and increase a hydrogenation yield, and a device therefor can be provided.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: March 13, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Sung Shik Eom, Dong Hyun Ko, Mi Young Kim, Da Won Jung, Tae Yun Kim, Min Ji Choi
  • Publication number: 20170349512
    Abstract: The present disclosure relates to an apparatus for generating glycol and a method thereof. More particularly, the present disclosure relates to an apparatus for generating glycol including (a) an aldol reactor; (b) an extractor for extracting an aldol product, unsaturated aldehyde, using an organic solvent that is not mixed with water; (c) a distillation column for removing a raw material from a solution extract that is discharged from the extractor; (d) a hydrogenation reactor for hydrogenating a solution extract that is discharged from the distillation column; and (e) a divided-wall distillation column for isolating glycol from a hydrogenated solution product that is discharged from the hydrogenation reactor, wherein the hydrogenation reactor is a fixed-bed catalytic reactor that is filled with a copper-based catalyst, and a method of preparing the same.
    Type: Application
    Filed: August 25, 2016
    Publication date: December 7, 2017
    Inventors: Sung Shik EOM, Da Won JUNG, Tae Yun KIM, Jung Uk CHOI, Dong Hyun KO, Mi Young KIM, Min Ji CHOI
  • Patent number: 9707552
    Abstract: Disclosed are a catalyst composition containing a phosphorous-based ligand and a hydroformylation process using the same. More specifically, disclosed are a catalyst composition containing a monodentate phosphite ligand, a monodentate phosphine ligand and a transition metal catalyst, wherein the total content of the entire ligand including the monodentate phosphite ligand and the monodentate phosphine ligand is 1 to 33 moles, based on 1 mole of the transition metal catalyst, and a hydroformylation method using the same. The present invention has an effect of providing a catalyst composition which reduces an N/I (ratio of normal to iso) selectivity of aldehydes produced by hydroformylation of an olefin-based compound and exhibits superior catalytic activity and stability, and a hydroformylation method of an olefin-based compound using the catalyst composition.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: July 18, 2017
    Assignee: LG CHEM. LTD.
    Inventors: Mi Young Kim, Min Ji Choi, Sung Shik Eom, Dong Hyun Ko, Da Won Jung, Tae Yun Kim
  • Publication number: 20170197201
    Abstract: Disclosed are a catalyst composition containing a phosphorous-based ligand and a hydroformylation process using the same. More specifically, disclosed are a catalyst composition containing a monodentate phosphite ligand, a monodentate phosphine ligand and a transition metal catalyst, wherein the total content of the entire ligand including the monodentate phosphite ligand and the monodentate phosphine ligand is 1 to 33 moles, based on 1 mole of the transition metal catalyst, and a hydroformylation method using the same. The present invention has an effect of providing a catalyst composition which reduces an N/I (ratio of normal to iso) selectivity of aldehydes produced by hydroformylation of an olefin-based compound and exhibits superior catalytic activity and stability, and a hydroformylation method of an olefin-based compound using the catalyst composition.
    Type: Application
    Filed: October 19, 2015
    Publication date: July 13, 2017
    Inventors: Mi Young KIM, Min Ji CHOI, Sung Shik EOM, Dong Hyun KO, Da Won JUNG, Tae Yun KIM
  • Publication number: 20160229772
    Abstract: Disclosed are a highly efficient neopentyl glycol preparation method and a device therefor. More particularly, disclosed are a method of preparing neopentyl glycol, wherein the method includes adding a hydroxypivaldehyde solution and hydrogen to a hydrogenation reactor that including a hydrogenation catalyst, wherein the hydroxypivaldehyde solution includes 6 to 30% by weight of hydroxypivaldehyde, to 70% by weight of neopentyl glycol, 10 to 30% by weight of alcohol, and 10 to 30% by weight of water, and a device therefor.
    Type: Application
    Filed: September 15, 2015
    Publication date: August 11, 2016
    Applicant: LG Chem Ltd.
    Inventors: Sung Shik EOM, Dong Hyun KO, Mi Young KIM, Da Won JUNG, TaeYun KIM, Min Ji CHOI